Catalytic converter



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1. IN A CATALYTIC CONVERTER FOR REMOVING NOXIOUS POLLUTANTS FROM AN EXHAUST GAS STREAM, AN OUTER SHELL HAVING ITS ENDS CLOSED BY A PAIR OF END CAPS, WALL-FORMING MEANS MOUNTED WITHIN SAID SHELL INWARDLY FROM EACH OF SAID END CAPS, THE WALL-FORMING MEANS ADJACENT AT LEAST ONE OF SAID CAPS BEING PERFORMED TO FORM A SOUND ATTENUATING CHAMBER ADJACENT AT LEAST ONE END OF SAID SHELL, GAS INLET AND OUTLET CONDUITS CARRIED IN SAID END CAPS AND WALL-FORMING MEANS AND DISPOSED IN OPEN COMMUNICATION WITH THE INTERIOR OF SAID SHELL ADJACENT ITS OPPOSED ENDS, MEANS MOUNTED IN SAID SHELL AND FORMING A CONVERSION CHAMBER ADAPTED TO HOLD A CATALYST FOR REMOVING THE NOXIOUS POLLUTANTS FROM THE EXHAUST GASES, SAID MEANS HAVING A PAIR OF OPPOSED PERFORMATED WALL SURFACES SPACED FROM THE ADJACENT WALL PORTIONS OF SAID SHELL, AN INLET DUCT CONNECTED TO ONE OF SAID PAIR OF WALL SURFACES AND AN OUTLET DUCT CONNECTED TO THE OTHER OF SAID PAIR OF WALL SURFACES, ONE END OF SAID DUCT BEING IN OPEN COMMUNICATION WITH THE INLET CONDUIT AND CONNECTED TO THE ADJACENT WALL PORTION OF SAID SHELL AND THE OPPOSITE END OF SAID INLET BEING CONNECTED TO FIRST BAFFLE PLATE EXTENDING BETWEEN SAID SHELL AND CONVERSION CHAMBER, ONE END OF SAID OUTLET DUCT BEING IN OPEN COMMUNICATION WITH SAID OUTLET CONDUIT AND CONNECTED TO THE ADJACENT WALL PORTION OF SAID SHELL AND THE OPPOSITE END OF SAID DUCT BEING CONNECTED TO A SECOND BAFFLE PLATE EXTENDING BETWEEN SAID SHELL AND CONVERSION CHAMBER, SAID OPPOSITE ENDS OF SAID INLET AND OUTLET DUCTS BEING CONNECTED TO SAID FIRST AND SECOND BAFFLE PLATES AT POINTS SPACED FROM SAID SHELL, AND MEANS FORRMING A BY-PASS PASSAGE OPERATIVELY INTERCONNECTING SAID INLET AND OUTLET CONDUITS WHEREBY THE EXHAUST GASES MAY PASS THROUGH THE CONVERTER WITHOUT PASSAGE THROUGH THE CATALYST. 